Sediment test record card



May 30, 1944. M, KOHN f SEDIMENT TEST RECORD CARD Filed Sept. 4, 1942 J.u w, w n B5 0 we f x DE nu a 54 A, D w nimm .5 .m E ED M.D MMAFDIQ.DPNRA x i H T B 0 x. w DH um. 34. Q. A o .L O. N .Smm o E D.R T mMchDAAA.D .2 DPNRAI Patented May 30, 1944 stares ,earsNr @OFFICE 5 Claims.

Myinvention Arelates to sedimenttest .record cards. More `particularly`it relates :,toanimprovement on the ysediment test vrecord card irrsivrin 'my Patent 112,292,450, dated August One of the objects of theinvention is'to provide a sediment test :record card-which -will Ybe ofsuch a nature that the results of the test rwill be visible even thoughthe operator may accidentally or ignorantly apply theiilter disc .wrongside up Von-the recordA card.

Further objects and advantages of the invention will be apparent from,the description and claims.

Specically, myinventionis exemplified by'a sediment test record cardhavingT front and rear leaves, each having a sight opening therein cov-`ered WithfCellophane, glassine, ror other light,

`transparent material, between which transparent vsheets a filter discexhibiting the resultsof a' test such as a cream or butter test, ora'milktest'for sediment, mold, or the like, may be displayed andindenitely'preserved, and in'which the-results of. the test will bevisible even if the disc is applied .wrong side up.

In the drawing, in which two forms oirmy invention are shown, f

Figure 1 is a plan view of the card beforethe filter disc is appliedthereto;

Fig. 2 is a. plan view showing the card folded and the lter disc visible`through the lfront opening;

Fig. 3 is aplan view showing the card folded and the lter disc visiblethrough-therear open- 111g;

Fig. 4 is -asectional view substantiallyon the line 4 4 of Fig. '2;

Fig.'5 israfplan viewof the filter dismand Fig. 6 is a sectional View.vsimilar tothesectional view of Fig. 4,'but showingasomewhat differentarrangement of thetransparent windows.

Referring totherlrawings in detail, and first to Figs. 1-5, inclusive,the construction shown therein comprises a at card I, including a rearleaf 2 and a front leaf 3, folclable down onto the rear leaf about aweakened line 4, and a lter disc 5, to be secured to the rear leaf 2 andcovered by the front leaf when folded down. The front leaf or ap isprovided with a sight opening 6 covered by a window l of thin,transparent material secured to the inner face of the front leaf. Therear leaf also is provided with a sight opening 8 and a window 9 ofthin, transparent material secured to the inner face of the rear leafand extending across the opening 8. The rear leaf 2 is provided with atongue l0 struck up therefrom underneath which the edge Il of the frontleaf may be invsertedafter the ltendisc'is secured toithe rear leaf asshown .in Fig. 4. The upper ,part of the card maybe providedAwith'suitable indicia in regard to placing the disc, locking the flapsA'together, blanks for indicating the grade of the iquid'tests, rdate,patrons'name, numberyand address.y yThe windows T and 9 fmay,'ifdesired, -be formed .of a single sheet of suitable transparentmaterialfolded -adjacent'the weakened line 4, `as shown in Fig. 4.

In makingv the test, the liquid, such as milk and cream, orthe like, isstrained through thefflter disc 5, andthe lter disc is then appliedtothe rear leaf c-f the Cardin ysuch a manner thatthe sediment sideofethe card will be visible-through the window 'l inthe front leaf. .Thevfilter Adisc becomes soitand adhesive when-wet and will adhere readilyto the-card. Theffront leaf is then folded down over the rear'leaf andoverthe filter disc, the sight opening Band window 'l inthe front leafregistering with the lterdisc- 5 so that the sediment sidefof the filterdisc is'completely visible through the window in the Afront leaf. Thecard is then marked to indicate `thegrade and sent to the supplier ofthe liquidythus showing the .supplier the filter disc indicating thegrade of theliquid tested.

In making these tests, the operator, either through accident,inadvertence, or mistake, may

happen to apply the disc to thecard upside down in Fig. 6 thetransparent Windows 1 and 9 are formed of separate sheets and the window9 is secured to the rear sheet on the outside thereof so that the filterdisc 5 may be placed in the opening 8.

Further modifications will be apparent to those skilled in the art andit is desired, therefore, that the invention be limited only by thescope of the appended claims.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

l. A sediment testing device comprising a card having a rear leaf and afront leaf having a hinge connection with the rear leaf to enable it tobe folded down on the rear leaf, said front leaf having a sight openingtherein, said rear leaf having a sight opening therein having itsboundary substantially coincident with respect to the boundary of saidfront opening When the leaves are folded together, transparent sheetmeans secured to said leaves, respectively, foldable with said leavesand extending across the openings thereof, and a filter disc securedbetween the front and rear sheet means by adhesion of the filteredmaterial to one of said transparent sheet means whereby the sedimentside of the filter disc is visible through either one or the other ofsaid sight openings, the boundaries of said sight openings beingsubstantially co-incident with the boundary of said filter disc wherebythe filtered out material will be completely visible through one of saidsight openings no matter in which one of four possible positions thefilter disc is placed.

2. A sediment testing device comprising a card having a rear leaf and afront leaf having a hinge connection with the rear leaf to enable it tobe folded down on the rear leaf, said front leaf having a sight openingtherein, said rear leaf having a sight opening therein having itsboundary substantially coincident with respect to the boundary of saidfront opening when the leaves are folded together, transparent sheetmeans secured to said leaves, respectively, foldable with said leavesand extending across the openings thereof, and a lter disc securedbetween the front and rear sheet means by adhesion of the filteredmaterial to one of said transparent sheet ymeans whereby the sedimentside of the filter disc is visible through either one or the other ofsaid sight openings, both said transparent sheet means being formed by asingle sheet of material foldable adjacent said hinged connection, theboundaries of said sight openings being substantially co-incident withthe boundary of said filter disc whereby the filtered out material willbe completely visible through one of said sight openings no matter inwhich one of four possible positions the filter disc is placed. Y

3. A sediment testing device comprising a card having a rear leaf and afront leaf vhaving a hinge connection with the rear leaf to enable it tobe folded down on the rear leaf, saidl front leaf having a sight openingtherein, said rear leaf having a sight opening therein having itsboundary substantially coincident with respect to the boundary of saidfront opening when the leaves are foldedtogether, transparent sheetmeans secured to said leaves, respectively, foldable with said leavesand extending across the openings thereof, and a filter disc securedbetween the front and rear sheet means by adhesion of the filteredmaterial to one of said transparent sheet means whereby the sedimentside of the filter disc is visible through either one or the other ofsaid sight openings, both said transparent sheet means being secured tothe inner faces of the leaves when folded, the boundaries of said sightopenings being substantially co-incident with the boundary of saidfilter disc whereby the filtered out material will be completely visiblethrough one of said sight openings no matter in which one of fourpossible positions the filter disc is placed.

4. A sediment testing device comprising a card having a rear leaf and afront leaf having a hinge connection with the rear leaf to enable it tobe folded down on the rear leaf, said front leaf having a sight openingtherein, said rear leaf having a sight opening therein having itsboundary substantially coincident with respect to the boundary of saidfront opening when the leaves are folded together, transparent sheetmeans secured to said leaves, respectively, foldable with said leavesand extending across the openings thereof, and a filter disc securedbetween the front and rear sheet means by adhesion of the filteredmaterial to one of said transparent sheet means whereby the sedimentside of the filter disc is visible through either one or the other ofsaid sight openings, at least one of said transparent sheet means beingsecured to the inner face of one of the leaves when the leaves arefolded, the boundaries of said sight openings being substantiallyco-incident with the boundary of said filter disc whereby the filteredout material will be completely visible through one of said sightopenings no matter in which one of four possible positions the filterdisc is placed.

5. A sediment testing device comprising a card having a rear leaf and afront leaf having a hinge connection with the rear leaf to enable it tobe folded down on the rear leaf, said front leaf having a sight openingtherein, said rear leaf having a sight'opening therein having itsboundary substantially.. coincident with respect to the boundary of saidfront opening when the leaves are folded together, transparent sheetmeans secured to said leaves, respectively, foldable with said leavesand extending across the openings thereof, and a filter disc securedbetween the front and rear sheet means by adhesion of the filteredmaterial to one of said transparent sheet means whereby the sedimentside of the filter disc is visible through either one or the other ofsaid sight openings, at least one of said transparent sheet means beingsecured to the outer face of one of the leaves when the leaves arefolded, the boundaries of said sight openings being substantiallyco-incident with the boundary of said filter disc whereby the lfilteredout material will be completely visible through one of said sightopenings no matter in which one of four possible positions the filterdisc is placed.

. MILTON KOI-IN.

